Building form for concrete structures



l 631 029 7 May 31, 19 27. G. L. HAGY v I BUILDING FORM FOR CONCRETE STRUCTURES Filed Oct. 27, 1926 3 Sheets-Sheet 1 71's. 1.

. U T FM -7 7 1927 1,631,029 May G. HAGY BUILDNIG FORM FOR CONCRETE STRUCTURES U File'a Oct. 27, 1926 -:s Sheets-Sheet 2 aedz'yc Z- 59g].

May 31,1927. 1,631,029

G. HAGY.

BUILDING FORM FOR concnm STRUCTURES FIlecLOct. 2 1926- sheets-Sheet 3 orye ZhH Patented May 31, 1927.

UNITED 'V STAT ES enonen L. HA Y, orisan ANTONIO, V'IEXAS.

a 7 BUILDING FonM non oonci anrn STRUCTURES.

Application filed October 27,1926, Serial No. 144,518.

This invention relates to an improved building form for use in erecting concrete structures, and an object of the invention is the provision of a structure wherein there is a minimum waste of material, and in which the handling of the material or parts is such that they can be used over and Over again for thersame purpose. I

A further object of the invention rewhic-hcan be simply and'efiiciently erected with a minimum expenditure of time, to form a rigid, compact and inexpensive struc ture or form with respect to which concrete may be quickly disposed in place;

A still further object is to provide a structure or form "embodying improved inner form boards capable of being sufficiently released to permit their ready elevation to a new or higher level.

Another ob ect is to provide a wallform including a plurality of uprights or strut-s arranged in pairs, with the pairs of struts it on either side far enough to pass through arranged in a plurality of series, and means 1 of a simple and efficient nature for tying thestruts of each pair together and for tying each pair of struts of one series with a pairof struts of another series so thatthe several members of the form areefi'ectively retained in proper position.

Still another "object is to provide an improvedform of core by means of which the wall formedlby the form may be readily constructed to have vertical air passages without unduly weakening the wall structure, and whereby a minimum consumption of concrete is required for the construction of a wallof givensize.

Other objects will become apparent as the nature of the invention is better'un'derstood,

and the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in ;,the accompanying drawings and claimed.-

' In the drawings, wherein likefret'erenc e characters indicate corresponding parts throughout the several views,

Figure 1 is an elevatlonal view of a'building form constructed-in acordance with the present invention, in place ready to erect further sections of concrete building walls on sections previously formed; 1

Figure 2 is an enlarged fragmentary cross section taken substantially upon line 2-2 of Figure 1; Y

' Figure 3 is anenlarged fragmentary horizontal-section taken substantially upon line 3'3-ot Figure 1, partly broken away;

Figure 4 is a fragmentary vertical section taken substantially upon line 4:-& of Figure 3; r

Figure 5 is a plan view of the sheet metal blank from which the body ofthe core element is formed; i I

Figure 6 is a central longitudinalse'csides in the provision of astructure orlformtional view of the core element; and

Figure is an enlarged perspective view of the-wedge-shaped end section forming part of each inner form board.

The preferred embodimentofjmy invention, as shown in the drawings, comprises a quickly and easily assembled building form of lumber of the proper dimensions which can be erectedabove or in relation to a foundation wall 5 which has been previously built into the ground in any suitable manner. At

intervals along the top of this wall'5 are disposed a plurality of tie rodsor bolts 6 which rest on the wall and project beyond and connect pairs ofuprights or struts 7 which are formed at their lower ends with transverse openings through which the rods 6 are passed. The uprights 7 of which there may be any number on each side of the proposed wall, are spaced from either side of the wall at a definite distance from its outer and inner faces, by means of spacing blocks 8, suitably held in place "and interposed between the foundation wall-and the lower ends of the uprights 7 beneath the tie'rods 6. This allows space for the form boards or planks 19 which are to hold the masonry or concrete in place, and also allows room for release sticks or strips of wood 10 which stand between the form boards 9 and the adjacent "faces of the adjacentuprights 7.

In the erection of'the first wall section upon the foundation wall-the boards 9 and sticks 10 rest upon the projecting portions of the tie rods 6 inwardly of the uprights 7 as shown in Figure 2, but when the next suc-' ceedingfsections of the wall are erected'with 1 the boards 9 raised as indicated by dotted lines in Figure2 and with the-sticks 1O correspondingly raised, saidboards 9 and sticks 10 will restupon the inwardly projecting e'nd'of cleats-which are temporarily nailed to the-sides of the uprights 7 as indicated by dotted lines at'll.

I The uprights"? of each pair are further c nn t d at intervals throughout their length by means "of tie bar's which are temporarily nailed at their ends to the uprights so as to be capable of ready successive removal when found necessary for permitting raising of the form boards 9 as the erection of the Wall progresses. Further more, the uprights of each pair are still fur-;: ther connected intermediate their ends by a further tie rod 13which1passes therethrough. By the use of thetie rod lSthe uprights are effectively tied together until several sections of the wall have been erected, whereupon said rod 13 is removed and the remaining tie bars 12 thereabove are suflicient for maintaining the pairs of uprights connected:

In Figures 1 and 3 the form 1s shown 'in operative relation to a pair of parallel walls and a wall at right angles to and connectingsaid parallel walls. A-SBIIGS of pairs of struts 7' are arranged in operative relation to each wall, ancl transverse tie bars 14; connect both struts comprisinga palr of one series with both struts forming a pair of a parallel series. Further, the pairs of'struts of each series are braced against lateral swaying by means of diagonal braces 15 which may be connected at their upper ends vas at 16 to a tie bar 14 adjacent the inner strutof a pair of one series, and extend downwardly and inwardly where'they are attached at their lower ends to an opposed inner strut or upright of the other parallel series. It will be particularly noted. that the tie bar 14, besides being nailed atits ends as at 17 to a pair of uprights of one series and an opposed pair of uprights of a parallel series, is also nailed as indicated at 18 to the inner upright .7 of allof the pairs of the series at right angles to said parallel series, whereby all of the uprights .are held in proper relative position.

l/Vhenthe uprights are-set in place, the

release sticks 10 and form boards 9 are laid against them, forming with the foundation wall or previouslyconstructed Wall section, a sort of trough which is to be filled with concrete. This trough is one board deep, and as stated above, the boards are raised as the work'progresses. The form boards 9 are held firmly against-the release sticks 10 by small pieces ofwood known as spread- 61's and indicated at 19. These Spreaders are slightly longer than the proposed wall is thick, andare shoved in between the form boards to hold them apart and in-place before the masonry or concrete is introduced. When the concreteis being introduced, thesespreaders may be taken :out.

In order to construct the wall with vertical passages so that the wall .is composed of inner and outer portions parallel with each other and connected at intervals by vertical webs, I make use of a plurality of cores which preferably comprise hollow sheet metal body portions 20 which taper smaller in a downward direction both at their sides and ends so that their removal for re-use 1s facilitated when a section of wall has been erected. These cores are arranged in uniformly spaced relation between the form boards '9 as clearly shown in Figures 2 ,and3, the spreader sticks 19 being disposed between the upper portions of the form boards 'at theintervals or spaces between the cores as shown. Each core body 20 is closed at its upper end by means of atop wall or plate'2 1 preferably formed of wood of a sizeto fit snugly in the upper end of the body and to be fixed therein by nailingorthe like as at 22. Nailed centrally across the top wall 21 of each core is a crosspiece 23, theends of which are adapted to rest upon the upper edges of the form boards 9 andto be temporarily I nailed to the latter as at 24 whereby the I cores are supported in uniformly spaced're- V lation to and betweenthe form boards 9 as well as held against displacement from this properrpositio'n. I g i .The body portion 20 of each core is pref erably constructed of a folded sheet metal blank of the form shown in Figurev 5 ineluding a pair of side sections 25integrally connected vat adjacent side edges by. an end section .26, a second end'section 26 being integralwith the remaining side edge of one of V the side sections 25. The free side edges of the end side section 25 and'the end section 126 are provided with flaps 27 which are adapted to be overlapped when the blank is. folded into proper form, and these flaps are suitablysecured together as by solderin so that a tapered tubular body is formed. Further flaps 28 are formed on the lower edges of all of the sections and. provided with 'mitered ends so that when the sections are folded to for-In the tubular body :theflaps 28 may be directed inwardly at right angles to thebody section to form a substantially continuous inwardly directed flange 29 on the lowerend ofthe body 20 for reinforcing .the latter and therebyrinsuring against inward bending of thesides and ends of the core body 20, due to the pressure of the concrete thereagainst, The cores are of Yr slightly .lesser' lengt'h than the depth of the one end of each inner form board 9 is 1 squared, and the adjacent end-of the inner form board 9 extending at right angles thereto is mitered as at 30 so that only the and a straight edge 34 to be positioned flush with the inner surface of the inner form board provided with the ad-- jacent squared end and extending at-right angles to said inner form board 9 provided" with the mitered end 30. This wedge mem ber 32 is of a width atits upper end por- 1 tion slightly greater than the thickness of the form board shown in Figure 4:, but of a lesser width than the thickness of the form board at its lower end, and the wedge member 32 is accordingly effectively supported by both. boards against displacement from proper position by the outward pressure of the concrete being poured in the space between the form boards. Hereto- -r fore, the inner form boards have all been provided with squared ends arranged in abutting relation, but after the concrete has been poured and allowed to set, the inner form boards have been pressed inwardly so as to be in very tight engagement and thereby render the removal of the inner form boards extremely hard. However, by use of the release wedges or wedge members 32 I am enabled to quickly elevate and remove the latter so that the adjacent ends of inner form boards 9 extending at right angles to each other are relieved of firm engagement so that said inner form boards may be readily removed or elevated to the next higher position. At the same time, by having the lower portion of the mitered end 30 overlapping the adjacent squared end of the adjacent inner form board 9 as at 31, said mitered end of the first inner form board is effectively braced against outward bending or springing. Each wedge member 32 may be formed at its upper end with a lateral shoulder 35 adapted to rest upon the adjacent upper edge of the board 9 when insorted or lowered to proper position, and a further extension 36 may be provided above the shoulder 35 under which an instrument nay be engaged for readily prying'the wedge member upwardly for removal. It is of course to be understood that suitabletie elements may be placed in the wall as it is being constructed for reinforcing the vertical webs formed between the cores and at the same time tying the inner and outer portions of the wall connected by said webs. For this purpose, conventional sub stantially Z-shaped tie elements are embedded in the vertical webs from time to time as is generally well known in the art.

After the wall has been built to any desired"lieight, the form boards which have acted as a form to hold the wall in place 'during'the setting of the cement up to this level, may easilybe taken out or released and raised to a higher level. This is done byknocking out the release sticks 10 from between'the planks or form boards and the uprights so that the fOIlll'bOElldS' may be raised, the release of the inner form boards being effected by removal of 'the wedge members 32. As before stated, the cleats 11 are nailed to the uprights Tfor supporting the jform boards in-their new or raised positions.

The cores boards and are then attached again after the form boards are raised to a new level, and in order to facilitate withdrawal of the cores from the cement previously allowed to set, vent openings are preferably provided as at 37 in the top walls 21 of the cores.

This permits the entrance of air so as to break any tendency of a vacuum being pro,

duced in the cores, thereby overcoming any tendency of the cores to stick by reason of a suction effect. i

In view of the above it will be apparent that I have provided a simple, compact form which can be easily and economically erected for the purpose of constructing concrete structures of any desired-type. It will also be seen that the erection and construction of this form requires a minimum expenditure of time and labor and theuse of a minimum amount of lumber which is so handled as to be capable of being repeatedly used.

Minor changes may be made without departing from the spirit and scope of the invention'as claimed.

hat I claim as new is s 1. In a form for concrete walls, uprights arranged at opposite sides of the walls of an angular foundation or base, inner and outer form boards supported between said uprights with the form boards arranged in end to end angular relation,an end of one inner form board beingsquared, and the adjacent end of another inner form board being" mitered at an outward and downward incline'to partially overlap the lower part of the squared end of said one inner form board, and a release wedge engaging said mitered end and said squared end of the respective innner form boards.

2. Ina form for concrete Walls, uprights arranged at opposite sides of the walls of an angular foundation or base, inner and outer form boards supported between said uprights with the form boards arranged in end to endlangular relation, an end of one inner form board beingsquared, the adja cent end of another inner form board being mitered at an outward and downward incline to partially overlap the lower part are "detached from the form" of the squared end of .said one inner form board, a release "Wedge engaging said mitered end and said squared end of the respective inner form hoards, said Wedge adapted to form a squared end finish for the ,mitered form board and having means stofacilitate its elevation and release.

7 3 In a form for concrete Walls, uprights arranged .at opposite sides o-f the walls of an angular foundation .or base, inner and outer form boards support-ed between said uprights with the form boardstarnanged in endto end angular relation, {an end of one inner form hoard belng squared, and the adgacent end 15 7-01 another 1-111181 form' bord being imltered aha-n outward and downwardincline to par tially overlap the lower part of the squared end-of said (one inner lIOl'lTl board, and a release Wedge engaging said mitered end and said squared end'of the respective inner form boards, said Wedge rhawin gfla shoulder at its noner'cnd .to'rest- .u onthe runner .ed e of l A l l o In testimony whereof I afiix my'vsignature.

e-nonenn HAGY. 

